Eldorado Canyon State Park includes 1,488 acres located in the unique ecological zone between the grasslands of the plains and the forests of Front Range foothills. The two main areas in the park are the Inner Canyon and Crescent Meadows. Elevations range from 5,800 to 8,800 feet.
Eldorado exemplifies the diversity of vegetation types found in Colorado’s Front Range foothills. Many factors attribute to this diversity, including the park’s varied topography, soils, microclimates of the canyon and, specifically, its location in the ecotone between mixed grass prairie and montane woodland.
Nearly barren rock outcrops and cliffs support lichen and moss communities. Ponderosa pine and Rocky Mountain juniper are the dominant trees, and commonly associated species include mountain mahogany, skunkbrush, currant, kinnikinnick, goldaster and beard-tongue. Dominant grass species include little bluestem, blue and side-oats grama, needle-and-thread grass, pine dropseed, prairie Junegrass, western wheatgrass, purple three-awn and smooth brome. One rare plant association, Douglas-fir/river birch, occurs in the northeast corner of Crescent Meadows. Riparian and wetland communities, though limited, are found along South Boulder Creek tributary drainages and on seeps and springs. Plains and narrowleaf cottonwood, Rocky Mountain maple, boxelder, chokecherry and American plum dominate riparian communities. Wetland communities are characterized by a number of shrubby willow species, Nebraska and aquatic sedge, Arctic rush and grass species.